/* eslint-disable */ 
<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt />
      </div>
      <!-- 登陆表单区域 -->
      <el-form
        ref="loginFormRef"
        :rules="login_rules"
        :model="loginForm"
        label-width="0px"
        class="login_form"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            type="password"
            v-model="loginForm.password"
            prefix-icon="iconfont icon-lock_fill"
          ></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button @click="login" type="primary">登录</el-button>
          <el-button @click="resetLoginForm" type="info">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 登陆表单的数据对象
      loginForm: {
        username: 'admin',
        password: '123456',
      },
      // 表单的验证规则
      login_rules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在3-10个字符之间', trigger: 'blur' },
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在6-15个字符之间', trigger: 'blur' },
        ],
      },
    };
  },
  methods: {
    // 点击重置按钮，重置登陆表单
    // 1.绑定form的ref   2.设置重置触发函数   3.写相关函数
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields();
    },
    login() {
      this.$refs.loginFormRef.validate(async (valid) => {
        if (!valid) return;
        const { data: ret } = await this.$http.post('login', this.loginForm);
        if (ret.meta.status !== 200) return this.$message.error('登陆失败！');
        else {
          this.$message.success('登录成功！');
        }
        /**
         * （1）登录成功之后的 token 保存到客户端的 sessionStorage 中
         *  项目中的登陆之外的api必须在登录之后才能访问
         *  token 只应在当前网站打开期间生效，所以将token保存在sessionStorage 中
         * （2）通过编程式导航跳转到后台主页，路由地址是/home
         * */
        console.log(ret);
        window.sessionStorage.setItem('token', ret.data.token);
        this.$router.push('/home');
      });
    },
  },
};
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.avatar_box {
  height: 130px;
  width: 130px;
  border: 1px #eee solid;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
  img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #eee;
  }
}
.btns {
  display: flex;
  justify-content: right;
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0px 20px;
  box-sizing: border-box;
}
</style>
